One of downtown Berlin's last reminders of its Communist past.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

From toys to kettles to scientific instruments, this German museum celebrates the beauty of 20th century design.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The non-native bovine herd was brought in to help conserve these Berlin wetlands.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

An abstract monument to a symphonic composer.

A subterranean house of worship carved right out of the bedrock.

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

A beloved Chicago music venue offering cold beer and lots of “Friendly."

Playable, historic pinball machines fill this Alameda museum.

Art in the form of a winding, man made crack in stone.

A man-made island in scenic San Francisco Bay.

A monument to the love people have for their pets.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.